Redness is usually not continuous bleeding. If there is continuous heavy bleeding, placenta previa, placenta praevia, high blood pressure in pregnancy may exist. The occurrence of redness in pregnant women is usually a sign before labor, manifested by bloody vaginal discharge, but the amount of bleeding is small, usually less than the amount of normal menstrual bleeding, and will not appear continuous bleeding, mostly due to the head of the fetus began to descend into the pelvis, and the fetal membranes from the lower uterine segments of the peeling off of the hemorrhage. Within 24 hours thereafter, the pregnant woman may experience paroxysmal pains with gradual regular contractions and enter labor, or go into labor a few days later, depending on the circumstances. If the amount of vaginal bleeding exceeds that of a normal menstrual period, it may be caused by disease factors, such as placental abruption, placenta praevia, and hypertension in pregnancy, which need to be identified. When redness occurs in a pregnant woman, she should avoid worry and panic and observe the amount of bleeding as well as the contractions. If the contractions are regular, remain at 1 per minute and last for 1-2 hours, you should go to the hospital as soon as possible.